PCBgogo

Hey all. I'm just wondering if anyone has ever tried soldering larger PCBs in a small size solder pot? I have these distribution bus PCBs I'm going to be selling (pic attached). Given the value of the finished product and the >250 solder points, hand soldering just wouldn't be economical. A solder pot seems like the way to go. Problem is the dimensions are an awkward 15 x 1.7" (38.1 x 4.32 cm), and I haven't even found a solder pot large enough to accommodate that in one pass (never mind that the pot + that much solder would surely run in the mid to high $1000s).
But, I'm wondering about the possibility of using a smaller solder pot, filling it to the brim, and then lowering my boards into the meniscus of the molten solder one section at a time. 
Keeping the solder at the right level would be fidgety, but this seems like it would work. Has anyone heard of using a solder pot in this manner for small production runs? Any recommendation for a solder pot that should do the trick?
I've got some other boards that would also benefit from having the pot, plus once a year or so I recycle a lot of damaged PCBs, so I wouldn't mind spending up to say ~ $1000.